luminance
/ˈluːmɪnəns/
"luminance" is a 9-letter English headword indexed on PlainSpell.
The verdict
“luminance” is uncommon English (frequency #50,648 among 2,297 “L” headwords), classed as a noun. The kind of spelling people second-guess.
- #50,648
- frequency rank, English
- 2,297
- “L” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The quality of being luminous.
Corpus desk
Index EN-luminance · luminance · English
luminance · rank #50,648 · 0 variants · 0 confusables
- FREQ-RARE #50,648
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 2,297
- PHOTO-FINISH loveliness
Nearest frequency peer: loveliness (-1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “luminance”
Sparse band: bars invert rank so rarer forms read shorter
- lionheart
lionheart
49,357 corpus weight
- Lorelai
Lorelai
49,356 corpus weight
- loveliness
loveliness
49,354 corpus weight
- luminance
luminance
49,353 corpus weight
- mandir
mandir
49,350 corpus weight
- manoeuvring
manoeuvring
49,349 corpus weight
What this shows Long-tail view: where “luminance” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | luminance |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈluːmɪnəns/ |
| Letters | 9 |
| Frequency rank | #50,648 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “luminance” in English
Rare enough to double-check
luminance is uncommon English at frequency #50,648 among 2,297 “L” headwords, classed as anoun, transcribed /ˈluːmɪnəns/. Rarity is why readers land here mid-draft. 3 senses are on record.
luminance doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. No confusable counterpart is on file for this word, which tends to mean the word is visually distinctive enough to stand on its own.
Wiktionary doesn't record an etymology for this headword, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct English form is luminance, spelled L-U-M-I-N-A-N-C-E.
Definition
- 1The quality of being luminous.
- 2The amount of light that passes through, is emitted, or is reflected from a particular area, and falls within a given solid angle.
- 3The luminous flux emitted in a given direction divided by the product of the projected area of the source element perpendicular to the direction and the solid angle containing that direction (i.e. luminous intensity divided by unit area), measured in stilbs or apostilbs.
Synonyms
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "luminance", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).